Transferring fuel between tanks on KSP for Mac

Took a while to figure out, but I'm really glad there is actually a way: Here's how you do it.

You move or copy out the rocket section you want to place on a new stage. Then, add an empty stage BEFORE the other stuff that's already there. Then once you go to place the stuff you took aside, it will be inserted into your newly created stage. This does not work if you create the empty stage AFTER.

As of version 0.22, this is possible with the newly-implemented subassemblies.

In Kerbal Space Program, each saved assembly (rocket, plane or subassembly for either) is stored as a .craft file in a subdirectory of the save folder ({KSP root}/saves/{name of save}/):

• Ships/SPH for Space Plane Hangar constructions
• Ships/VAB for Vehicle Assembly Building constructions
• subassemblies/SPH and subassemblies/VAB for the subassemblies respectivley.

Subassemblies and normal vessels have almost no differences. There is, usually, no need to change anything about the save files - merely move them from one directory to the other.

However, a subassembly requires a free attachment node at the root part. You need to make sure (either through save editing or through in-game editing and saving) that the root part (that is, the part that you first placed and then connected everything else to) has *at least one free attachment node.